Yi Sunji (1406-1465) was an astronomer during the Chosun Dynasty who took Chosun's calendrical astronomy to the global level. His publication of two astronomy books, Chiljeongsan-naepyeon and Chiljeongsan-oepyeon enabled Chosun to carry out astronomical activities its own way.
Discovered on 4-12-2000 in Bohyunsan by Jeon, Y.-B., Lee, B.-C.